On a general note regarding the outputs of SPC run (in my case TDS540C and TDS784C), the bottom of the screen shows from left to right:
• Signal Path
• Voltage Ref
• Frequency Ref
• Pulse Trigger
• Comm filters
Both my Oscope do show on the BANNER the 2C option activated, the 4 first items are all PASS but one thing I do not understand, it was easy to set the 2C option through GPIB but it leaves in my case Comm Filters = NOT PRESENT
What are the conditions (HW and SW) to have Comm Filter to be seen as PRESENT if required by 2C option ?
Thanks, Albert